How many chill hours does 78056 get?

78056 averages 492 chill hours per winter, ranging from 258 to 611 across the last 10 years.

What hardiness zone is 78056?

78056 is in USDA hardiness zone 9a.

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The short answer

78056 averages 492 chill hours per winter (258–611 across 10 years) in USDA zone 9a.

Computed from 10 winters of ERA5 hourly temperature (Open-Meteo, 2015–2025); zones from USDA PHZM 2023. Data updated July 3, 2026. See methodology.

Every variety in our database, checked against 78056’s chill hours and zone:

Chill and zone requirements are comfortably met in 78056.

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Possible in a good year or a favorable microclimate — click through for the caveats.

How many chill hours does 78056 get?: 78056 averages 492 chill hours per winter, ranging from 258 to 611 across the last 10 years.
What hardiness zone is 78056?: 78056 is in USDA hardiness zone 9a.

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[1] Open-Meteo / Copernicus ERA5. Historical Weather API (hourly 2m temperature) — accessed July 2026
[2] USDA / PRISM (Oregon State University). 2023 USDA Plant Hardiness Zone Map — accessed July 2026